Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Toto Construction in Hillsborough, CA | Daly City Construction
We provide independent Toto fixture installation, repair, and full bathroom remodeling across Hillsborough, CA. What makes our Toto work here different is sequencing: on Hillsborough’s sloped, wooded estates, a toilet or washlet swap often has to be coordinated around geotechnical review, arborist clearance, and drainage work before we can even touch the rough-in. We know the brand’s internal fill-valve, flapper, and washlet electronics architecture well enough to diagnose problems on the first visit instead of guessing. If you need Toto service in Hillsborough, call (866) 505-5254 for a free estimate.

Why Hillsborough Residents Choose Us for Toto Service
We have installed and repaired Toto residential fixtures across the Peninsula for years, from Millbrae Toto service to Hillsborough estates. That includes the Drake and Drake II two-piece lines, the Ultramax and Eco Ultramax one-piece series, Washlet and Washlet+ electronic bidet seats, and the Soirée and Carlyle one-piece and vessel fixtures. When a homeowner in Hillsborough has a Washlet seat that power-cycles after a damp winter or a Drake that phantom-refills at 3 a.m., they call us because we know the difference between a fill-valve seal failure and a control-board issue before we open the tank. Noel Cabrera grew up in Daly City’s Westlake district watching his uncle re-frame a garage, trained in construction technology at City College of San Francisco, and has spent years working on fog-weathered Peninsula homes that need real moisture management, not cosmetic fixes. We are an independent contractor and are not authorized, sponsored, or endorsed by Toto. That independence means we recommend the repair that makes sense for your house, not the one that pads a manufacturer relationship.
Hillsborough homes run large. Master baths sit at the end of long hallways in houses with real square footage, and the fixtures inside them are usually mid-to-high-end Toto product. When a washlet seat fails in an unheated master bath after years of damp winter air, the failure mode is predictable: seat sensor corrosion or control board degradation. When a G-Max or Double Cyclone flush valve loses its seal, you get phantom refills that quietly waste water on metered service. We fix these with genuine Toto OEM components, not aftermarket parts that cause repeat callbacks.
Styles & brands we work with







Common Toto Construction Problems We Solve in Hillsborough
- Washlet electronic seats failing at the seat sensor and control board. Hillsborough’s damp winter air works its way into unheated master baths, and after a few seasons the Washlet S550e or S750e starts power-cycling randomly or stops responding entirely. We test the sensor rail and control board separately, because replacing the wrong one costs you money and doesn’t fix the seat.
- G-Max and Double Cyclone flush valves losing their seal. This produces phantom refills, running toilets, and water bills that creep up month over month. In Hillsborough’s estate homes on metered service, a silently running Drake can waste hundreds of gallons a month. We replace the flush valve with the OEM part and dial in the chain and flapper so the toilet actually stops.
- One-piece porcelain bases cracking or rocking on shifting subfloors. Hillsborough’s hillside foundations transmit movement into the closet flange, and a one-piece Toto Ultramax II or Soirée that was installed on a marginal flange will rock, crack, or leak at the wax ring. We reset the flange, shim correctly, and use a double-thick wax ring or flange extension where the subfloor has moved.
- Supply-line and fill-valve mineral clogging from hard Peninsula water. Weak fills, slow tank recovery, and a toilet that takes forever to be ready for the next flush. Hillsborough’s municipal supply carries the same mineral load as the rest of the Peninsula, and fixtures never fitted with a filter eventually clog. We replace the fill valve with the genuine Toto OEM part and recommend a whole-house filter where the buildup is chronic.
- Washlet+ rough-in complications during bathroom remodels. Washlet+ fixtures hide the supply line and power behind the toilet for a clean look, but that means the rough-in has to be perfect before tile goes up. On a Hillsborough remodel, if the wall framing or drain location is off by an inch, the washlet seat won’t seat flush and the supply line gets kinked. We coordinate the rough-in during the framing and drywall phase so the finish trim actually fits.
Toto Service in Hillsborough: What Local Conditions Mean for Your Equipment
Hillsborough is different from every other city we work in, and it’s not just the lot sizes. The town’s strict design-review process and large-lot setbacks mean contractors must coordinate extensively with arborists and geotechnical engineers before breaking ground, especially on sloped parcels where retaining walls and drainage are scrutinized. That’s true for a full bathroom remodel, and it’s even true for what looks like a simple fixture swap. Hillsborough’s large-lot estates on wooded, sloped parcels mean a bathroom remodel often requires geotechnical review and arborist coordination before we can touch a fixture rough-in, so Toto toilet and washlet replacement gets sequenced around structural and drainage work rather than treated as a standalone swap. A homeowner off a hillside parcel above Lower Hillsborough can’t just schedule a toilet replacement for Tuesday morning. The project has to move through the same design-review and site-analysis pipeline as any other construction work on the property. We plan for that from the first phone call.
That’s also why the climate here hits Toto fixtures harder than it does in flatter Peninsula cities like Toto service in San Mateo. Summer fog settles into the canyons, damp winters keep unheated baths humid for months, and hardwood-shaded lots slow evaporation. Washlet electronics and supply lines both absorb that moisture over time. On a Mediterranean villa remodel off the hillside parcels above Lower Hillsborough, our crew pulled a Toto Ultramax II that had been rocking on a shifting flange and a Washlet seat that kept power-cycling after damp winters. We reset the closet flange, added a new OEM fill valve, and fitted a fresh washlet with a GFCI-protected circuit. The client came back to us for a second bath rather than the original installer. That’s the pattern in Hillsborough: the first fix has to be the right fix, because the second visit costs more than the fixture.
Toto Models & Products We Service in Hillsborough
We service the full residential Toto line we see across Hillsborough and the wider Peninsula on Toto sales & service calls: Drake and Drake II two-piece toilets (CST743/CST454 series), Ultramax II and Eco Ultramax one-piece toilets, Washlet and Washlet+ electronic bidet seats (S550e/S750e class), and Soirée and Carlyle one-piece and vessel fixtures. We keep common OEM parts on the truck: fill valves, flappers, tank-to-bowl gaskets, flush-valve assemblies, and washlet seat sensors. When a Washlet board or pump has failed out of warranty, we give a straight repair-versus-replace comparison rather than pushing a new fixture. Aftermarket flappers are the number-one cause of repeat running-toilet callbacks, so we won’t use them on anything that deserves a real repair.
See the difference
Before
After
Before
After
Before
AfterToto Service Pricing in Hillsborough
Here’s what Toto-related bathroom work typically runs in Hillsborough, based on our Peninsula pricing:
| Service | Price Range |
|---|---|
| Full Bathroom Remodel | $9,000 – $28,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
What drives the final number: whether you’re doing a fixture swap or a full gut remodel, whether the bathroom sits on a sloped portion of the lot requiring structural work, tile and waterproofing scope, and which Toto fixture line you choose. A free estimate includes a site visit, a written line-item scope, and a discussion of OEM versus aftermarket parts for any repair work. Call (866) 505-5254 to schedule yours.
Serving Hillsborough, CA — Our Local Coverage Area
We’re based in the Hillsborough area and know this community well, with Toto in Burlingame just minutes away. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Toto Construction in Hillsborough
No. We are an independent contractor serving Hillsborough service area and the wider Peninsula. We are not authorized, sponsored, or endorsed by Toto. That’s an advantage for you: we recommend repairs based on what the fixture actually needs, not on a manufacturer relationship. Call (866) 505-5254 for an independent assessment.
We use genuine Toto OEM fill valves, flappers, gaskets, and washlet components on anything mid-repair or better. Aftermarket flappers are the number-one cause of repeat running-toilet callbacks, so we won’t install them on a toilet that deserves a proper fix. For out-of-warranty washlet boards or pumps, we’ll lay out the repair-versus-replace math before any work starts.
A straightforward swap on a stable subfloor takes about half a day. On Hillsborough’s sloped parcels, the job can take longer because any flange or subfloor movement has to be addressed before the new fixture goes down. We won’t rush a one-piece Toto onto a shifting flange and call it done. Call (866) 505-5254 and we’ll give you a realistic timeline for your specific bathroom.
On the Peninsula, from Toto repair in Highlands-Baywood Park to Hillsborough, a Washlet seat in a damp or unheated master bath usually needs its first real repair between five and eight years. The typical failure is the seat sensor or control board, not the pump. Once a board fails out of warranty, the repair-versus-replace comparison usually favors replacing the seat, and we’ll show you the numbers before you decide.
For a direct fixture swap with no rough-in changes, generally no permit is required. But if the work is part of a larger bathroom remodel that moves the drain, wall, or supply line, Hillsborough’s design-review process almost always requires permits, plans, and possibly geotechnical or arborist review. We handle that coordination for you. Call (866) 505-5254 to talk through your project.
Service Areas Near Hillsborough
We serve Hillsborough and the surrounding Peninsula communities, including Daly City, Broadmoor, Colma, Brisbane, and the northern San Mateo County hillsides. For homes across the Golden Gate or marin-side, see Toto service in Sausalito and Toto service in Belvedere. Wherever the house sits, the approach is the same: diagnose the real problem, use the right OEM part, and sequence the work around the site’s actual conditions.
Book Your Toto Service in Hillsborough Today
If you’ve got a Toto fixture acting up in Hillsborough, tell us what the house is doing, not what you think it needs. Call (866) 505-5254 for a free estimate, and we’ll come out, diagnose it, and give you a straight answer on repair versus replace.
Written by Noel Cabrera, Owner at Daly City Construction, serving Hillsborough and the Peninsula.